Malicious PDF — malware analysis report

Static analysis result for SHA-256 06e80a4fa0080354…

MALICIOUS

PDF

78.6 KB Created: 2021-03-15 21:18:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 01695734637d49d14a64f896703af2e2 SHA-1: 7856f58802279a5172e2d6b07986ce55bf48d157 SHA-256: 06e80a4fa0080354bea499c3e1c48a45b45f83cb247ce065daa21950e248379c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, including one pointing to 'mezovuduw.ru' which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to technical documentation, likely to trick users into visiting the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mezovuduw.ru/award?keyword=hydro+pneumatic+braking+system+pdf PDF link annotation
    • http://dafagaketa.sportsontheweb.net/64243213894.pdfIn PDF document text
    • http://tapuxuwurumar.22web.org/medieval_2_total_war_how_to_unlock_all_factions_steam.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/vetedimoviwijonojolukopajqe8mt.pdfIn PDF document text
    • http://shtangye.xyz/the_devil_is_a_part_timer_fanfictioncr1pd.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/wudagu.pdfIn PDF document text
    • http://lufirisor.iblogger.org/42911364994.pdfIn PDF document text
    • http://liwitesuzemumex.sportsontheweb.net/vistara_2_letter_iata_code.pdfIn PDF document text
    • http://juvovagesubo.mywebcommunity.org/angielski_dla_pocztkujcych_wiczenia_chomikuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/zenujixuxererud.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/50087323017.pdfIn PDF document text
    • http://porumujowupof.epizy.com/descargar_mobogenie_market_para_android_apk.pdfIn PDF document text
    • http://fefekug.rf.gd/ruvafofubasilirasojamibik.pdfIn PDF document text
    • http://larisakexifa.epizy.com/abiotic_vs_biotic_factors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ead469-9ce9-4bb4-b45c-43c8fa7ee1c2/mizewijimeru.pdfIn PDF document text
    • http://fiwofitobuz.rf.gd/biodata_format_for_marriage_purpose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0429c363-6a4a-4240-997b-0daa319b0a38/sistema_mexicano_de_alimentos_equivalentes_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/char_broil_performance_475_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2969c45-1e07-498b-b04b-0747ade50d5c/52040356782.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/video_editing_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e878ee-ce30-471c-a738-14f25b41f195/necchi_sewing_machine_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12d9de6a-ae2e-4f8a-925f-5af145817acd/arduino_language_code.pdfIn PDF document text
    • http://wiloradakuno.onlinewebshop.net/bendix_quick_reference.pdfIn PDF document text
    • http://gotapomoleza.epizy.com/how_much_is_a_2015_jeep_wrangler_rubicon.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF377 5712 bytes
SHA-256: e0e078f3f53230b03b7b92be1cbdac45484f2f1d3a4e144fd3dfe8564ea321bf
font_01_sfnt_off000106d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D5 11324 bytes
SHA-256: c4ea9eb4d5e977927df6f104f6b0890f8c4359f090e189550575291688de5a32

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